Master data cleaning in pandas like a pro with these simple functions.
Data cleaning is a critical step in any data analysis project
Learn to clean messy datasets with these easy steps.
A thread🧵👇
In pandas, you can use functions like .dropna(), .fillna(), and .replace() to clean up your data.
For example, let's say you have a data frame with missing values like this:
1. The .dropna() function removes any rows with missing values.
For example, you can use df.dropna() to drop any rows with missing values from your data frame called "df":
2. The .fillna() function replaces missing values with a specified value.
For example, you can use df.fillna(0) to replace any missing values in your data frame called "df" with 0:
3. The .replace() function replaces specified values with another value.
For example, you can use df.replace('Yes', 'True') to replace all instances of 'Yes' in your data frame called "df" with 'True':
4. Use functions like .str.lower() and .str.upper() to convert string values to lowercase or uppercase, respectively.
For example, you can use df['City'].str.lower() to convert all values in the 'City' column of your data frame to lowercase:
With these simple functions, you can quickly and easily clean up your data in pandas and prepare it for analysis! #pandas #datacleaning #datascience
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